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DᴀʀᴋPᴀʀᴀᴅᴏx

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Let's solve for a :

  • [tex](a - 5) \times (a + 3)[/tex]

  • [tex](a \times a) + (a \times 3) + ( - 5 \times a) + ( - 5 \times 3)[/tex]

  • [tex] {a}^{2} + 3a - 5a - 15[/tex]
It would be a²+3a-5a-15

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